The invention is an alkaline cleaning system which includes an alkaline detergent composition having a pH greater than 10.5 when diluted to a 1 wt-% aqueous solution, and an alkali stable continuous polymeric film dispersible or soluble in aqueous liquids covering the detergent composition. The invention...http://www.google.com/patents/US5316688?utm_source=gb-gplus-sharePatent US5316688 - Water soluble or dispersible film covered alkaline composition
